From: DeskNow Knowledge Base
http://www.desknow.com/kb/

How to sync with PocketPC devices
http://www.desknow.com/kb/idx/17/125/article/

You can sync your PocketPC device with DeskNow using a third-party software. The software that we currently recommend is provided by Synthesis AG. To install the trial software, visit http://www.synthesis.ch and click on the 'Download now' link. Then follow the installation instructions.

Important. Before starting, login into DeskNow with your web browser, and go to Preferences/SyncML. Here you can select which contact folders / calendars to sync with. By default, no folders/calendars are selected. 

Configure the sync client according to the following screenshots. It is important that you use 'contacts' , 'events' , and 'tasks' as server paths, as shown. No spaces, all lowercase.

The 'Only From' option in the Synthesis SyncML client is not SyncML standard, and must not be enabled.